单词	Oort cloud
释义	Oort cloud /ɔːt / /ʊət / Astronomy A spherical cloud of small rocky and icy bodies postulated to orbit the sun beyond the orbit of Pluto and up to 1.5 light years from the sun, and to act as a reservoir of comets. Its existence was proposed by J. H. Oort.
随便看	Braintree brain trick brain trust brain truster brain tunic brain-twister brain vibration brain war brainwash brainwave brainwork brainworm brainwriting brainy braise brak brake brake block brake caliper brake disc brake drum brake fern brake fluid brake harrow brake horsepower

英语词典包含243303条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。